Package org.odpi.openmetadata.commonservices.repositoryhandler

Class RepositoryFindEntitiesIterator

java.lang.Object

org.odpi.openmetadata.commonservices.repositoryhandler.RepositoryIteratorForEntities

org.odpi.openmetadata.commonservices.repositoryhandler.RepositoryFindEntitiesIterator

public class RepositoryFindEntitiesIterator
extends RepositoryIteratorForEntities

RepositoryFindEntitiesIterator is an iterator class for iteratively retrieving entities based on a search criteria. It is used where the caller needs to filter the results coming from the repository and may need to make more than one call to the repository in order to accumulate the number of requested results. Note this class is intended for a single request's use - it is not thread-safe.

Field Summary

Fields inherited from class org.odpi.openmetadata.commonservices.repositoryhandler.RepositoryIteratorForEntities

effectiveTime, entitiesCache, entityTypeGUID, entityTypeName, forDuplicateProcessing, forLineage, methodName, pageSize, repositoryHandler, sequencingPropertyName, startingFrom, userId

Constructor Summary

Constructors

Constructor

Description

RepositoryFindEntitiesIterator(RepositoryHandler repositoryHandler, String userId, String entityTypeGUID, List<String> entitySubtypeGUIDs, SearchProperties searchProperties, List<InstanceStatus> limitResultsByStatus, SearchClassifications searchClassifications, Date asOfTime, String sequencingProperty, SequencingOrder sequencingOrder, boolean forLineage, boolean forDuplicateProcessing, int startingFrom, int requesterPageSize, Date effectiveTime, String methodName)

Constructor takes the parameters used to call the repository handler.

Method Summary

Modifier and Type	Method	Description
boolean	moreToReceive()	Determine if there is more to receive.

Methods inherited from class org.odpi.openmetadata.commonservices.repositoryhandler.RepositoryIteratorForEntities

getNext

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RepositoryFindEntitiesIterator

public RepositoryFindEntitiesIterator(RepositoryHandler repositoryHandler,
                                      String userId,
                                      String entityTypeGUID,
                                      List<String> entitySubtypeGUIDs,
                                      SearchProperties searchProperties,
                                      List<InstanceStatus> limitResultsByStatus,
                                      SearchClassifications searchClassifications,
                                      Date asOfTime,
                                      String sequencingProperty,
                                      SequencingOrder sequencingOrder,
                                      boolean forLineage,
                                      boolean forDuplicateProcessing,
                                      int startingFrom,
                                      int requesterPageSize,
                                      Date effectiveTime,
                                      String methodName)

Constructor takes the parameters used to call the repository handler.

Parameters:

repositoryHandler - interface to the open metadata repositories.

userId - user making the request

entityTypeGUID - String unique identifier for the entity type of interest (null means any entity type).

entitySubtypeGUIDs - optional list of the unique identifiers (guids) for subtypes of the entityTypeGUID to include in the search results. Null means all subtypes.

searchProperties - Optional list of entity property conditions to match.

limitResultsByStatus - By default, entities in all statuses are returned. However, it is possible to specify a list of statuses (eg ACTIVE) to restrict the results to. Null means all status values.

searchClassifications - Optional list of entity classifications to match.

asOfTime - Requests a historical query of the entity. Null means return the present values.

sequencingProperty - String name of the entity property that is to be used to sequence the results. Null means do not sequence on a property name (see SequencingOrder).

sequencingOrder - Enum defining how the results should be ordered.

forLineage - the query is to support lineage retrieval

forDuplicateProcessing - the query is for duplicate processing and so must not deduplicate

startingFrom - initial position in the stored list.

requesterPageSize - maximum number of definitions to return on this call.

effectiveTime - the time that the retrieved elements must be effective for

methodName - name of calling method

Method Detail

moreToReceive

public boolean moreToReceive()
                      throws UserNotAuthorizedException,
                             PropertyServerException

Determine if there is more to receive. It will populate the iterator's cache with more content.

Specified by:

moreToReceive in class RepositoryIteratorForEntities

Returns:

boolean flag

Throws:

UserNotAuthorizedException - the repository is not allowing the user to access the metadata

PropertyServerException - there is a problem in the repository